Fix current_balance view
When created using TypeORM, then it fails: QueryFailedError: cannot alter type of a column used by a view or rule
Original code which is now removed:
import { dbColumnName } from '@tezos-dappetizer/database';
import { Connection, ViewEntity } from 'typeorm';
import { DbBalance } from './db-balance';
@ViewEntity({
synchronize: false,
expression: (connection: Connection) => connection.createQueryBuilder()
.select(dbColumnName<DbBalance>('ownerAddress'))
.addSelect(dbColumnName<DbBalance>('amount'))
.addSelect(dbColumnName<DbBalance>('tokenId'))
.addSelect(dbColumnName<DbBalance>('tokenContractAddress'))
.from(DbBalance, 'b')
.where(`${dbColumnName<DbBalance>('validUntilBlockHash')} IS NULL`),
})
// eslint-disable-next-line @typescript-eslint/no-extraneous-class
export class DbCurrentBalance {}